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Equipment

Gear Slots

Six gear slots

Your virus wears six pieces of gear: five stat pieces and the Viral Genome, which adds levels to skills instead. Each stat slot is named for a real part of a virus particle and works like a classic RPG equipment slot. Every virus in your lineage shares one loadout and one bag, so gear carries over whichever virus a generation becomes, and you keep it when you die.

The Gear screen: all six slots filled, with the Viral Genome selected and its skill mods showing
The Gear screen: all six slots filled, with the Viral Genome selected and its skill mods showing
On this page6
  1. Capsid
  2. Envelope
  3. Matrix
  4. Tail Fibers
  5. Spike Protein
  6. Viral Genome

Capsid

Head

The protein shell around the genome, worn as your helmet. It leans toward survival, stealth and ability charge.

  • Can roll: Max HP, Crit chance, Crit damage, Stealth, Ult charge, Shift charge, Regen, Pickup range
  • Boss set pieces for this slot are Crowns (e.g. Histamine Crown)
From the Codex

The protein shell that encloses a virus's genome, built from repeating subunits called capsomeres. Most are icosahedral (20 triangular faces) or helical.

Fun fact: Capsids self-assemble: the proteins snap together on their own, like a puzzle that builds itself.

Capsid in the Codex

The lipid membrane a virus steals from its host, worn as body armor. It's the main defensive slot.

  • Can roll: Max HP, Armor, Regen, Lifesteal, Stealth, Damage, Ult charge
  • Boss set pieces for this slot are Mantles (e.g. Surfactant Mantle)
From the Codex

An outer lipid membrane some viruses steal from the host cell as they bud out of it, studded with the virus's own glycoproteins.

Fun fact: Enveloped viruses like flu and HIV are fragile outside the body: soap dissolves their envelope.

Viral Envelope in the Codex

Matrix

Legs

The protein layer lining the envelope, worn as leg armor. It mixes movement with toughness.

  • Can roll: Move speed, Armor, Max HP, Shift charge, Pickup range, Ambush, Regen
  • Boss set pieces for this slot are Lattices
From the Codex

A protein layer lining the inside of the envelope (like influenza's M1) that gives the virion its shape and organizes assembly.

Fun fact: Influenza's M1 is one of the most abundant proteins in the virion.

Matrix Protein in the Codex

Long gripping fibers, worn as the virus's boots. It's the movement and stealth slot.

  • Can roll: Move speed, Pickup range, Stealth, Ambush, Fire rate, Shift charge, Armor, Crit chance
  • Boss set pieces for this slot are Talons
From the Codex

Long, jointed protein fibers on bacteriophages that recognize and grip a host cell's surface before the phage injects its DNA.

Fun fact: Viruses that infect humans don't have tail fibers; in the game they're the virus's legs and boots.

Tail Fibers in the Codex

The receptor-grabbing spike, worn as your weapon. It's the offense slot.

  • Can roll: Damage, Fire rate, Crit chance, Crit damage, Lifesteal, Ambush, Ult charge, Shift charge
  • Boss set pieces for this slot are Lances
From the Codex

Surface glycoproteins such as flu's hemagglutinin, HIV's gp120 and the coronavirus spike (S) protein that bind a cell's receptors and drive fusion.

Fun fact: Spike proteins are the main target of most antiviral vaccines.

Spike Protein in the Codex

Viral Genome

Skills (6th slot)

A sixth piece, like a class mod: instead of stats it adds levels to skill-tree skills. A skill you haven't learned is yours while it's worn, and one you have goes up, even past its maximum (a 3/3 skill with +2 plays as 5/3).

  • Three kinds: Pure (every skill from one tree), Recombinant (two from one tree, a third from another), Mosaic (one from each tree)
  • Common: 1 skill at +1 · Uncommon: 1–2 at +1–2 · Rare: 1–2 at +1–2 · Epic: 2 at +2 · Legendary: 2–3 at +2–3 · Mythic: 2–3 at +2–3 · Prismatic: 3 at +3
  • Active skills are a little rare on a genome (each level past 1 makes the active 20% stronger); capstones are very rare (a genome capstone stands in for the one you chose in that tree)
  • Never two active skills, two capstones from one tree, or the same skill twice; Shrapnel Ring never rolls
  • About 8% of regular gear drops are a Viral Genome; it belongs to no set and can't be enhanced or combined
  • Tap a skill on a genome to see its effect without the genome and with it worn, at each rank
From the Codex

Your virus's experience and the skills it buys.

Fun fact: Switching to another capstone in the same tree is free: its point moves over.

Levels & Skill Tree in the Codex

See also